Which of the following abilities have primates demonstrated, either in the natural environment or the laboratory?
a. the use of objects as simple tools
b. the summing of quantities
c. the use of symbols to make requests
d. an understanding of short English sentences

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The Answer of Which of the following abilities have primates demonstrated, either in the natural environment or the laboratory?
a. the use of objects as simple tools
b. the summing of quantities
c. the use of symbols to make requests
d. an understanding of short English sentences

Which of the Following Abilities Have Primates Demonstrated, Either in the Natural